* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: #222;
}

.row, .column {
    display: flex;
    gap: 10px;
}

.column {
    flex-direction: column;
}

.container {
    width: 850px;
    height: 630px;
    margin: 40px auto 0;
    padding: 10px 20px;
    background-color: black;
}

.left, .middle, .top {
    flex: 1;
}

.left-column, .right {
    width: 190px;
}

.middle-top, .bottom {
    height: 170px;
}

.box {
    flex: 1;
    background-color: white;
    border-radius: 10px;
}

.tall {
    flex: none;
    height: 280px;
}

.right .tall {
    height: 310px;
}

.wide {
    flex: 2;
}